From 59dc47f72c2099553eeb55399db00ed6662056ac Mon Sep 17 00:00:00 2001
From: Martijn Braam <martijn@brixit.nl>
Date: Fri, 18 Sep 2020 17:07:23 +0200
Subject: [PATCH] Use dtb auto detection for config file

---
 .../pine64,pinephone-1.0.ini                  |  0
 config/pine64,pinephone-1.1.ini               | 18 ++++++++
 config/pine64,pinephone-1.2.ini               | 18 ++++++++
 main.c                                        | 41 ++++++++++++++++---
 uvc.ini                                       |  7 ----
 5 files changed, 72 insertions(+), 12 deletions(-)
 rename pinephone.ini => config/pine64,pinephone-1.0.ini (100%)
 create mode 100644 config/pine64,pinephone-1.1.ini
 create mode 100644 config/pine64,pinephone-1.2.ini
 delete mode 100644 uvc.ini

diff --git a/pinephone.ini b/config/pine64,pinephone-1.0.ini
similarity index 100%
rename from pinephone.ini
rename to config/pine64,pinephone-1.0.ini
diff --git a/config/pine64,pinephone-1.1.ini b/config/pine64,pinephone-1.1.ini
new file mode 100644
index 0000000..fa95dae
--- /dev/null
+++ b/config/pine64,pinephone-1.1.ini
@@ -0,0 +1,18 @@
+[device]
+csi=sun6i-csi
+
+[rear]
+driver=ov5640
+width=2592
+height=1944
+rate=15
+fmt=BGGR8
+rotate=270
+
+[front]
+driver=gc2145
+width=800
+height=600
+rate=30
+fmt=BGGR8
+rotate=90
diff --git a/config/pine64,pinephone-1.2.ini b/config/pine64,pinephone-1.2.ini
new file mode 100644
index 0000000..fa95dae
--- /dev/null
+++ b/config/pine64,pinephone-1.2.ini
@@ -0,0 +1,18 @@
+[device]
+csi=sun6i-csi
+
+[rear]
+driver=ov5640
+width=2592
+height=1944
+rate=15
+fmt=BGGR8
+rotate=270
+
+[front]
+driver=gc2145
+width=800
+height=600
+rate=30
+fmt=BGGR8
+rotate=90
diff --git a/main.c b/main.c
index 836449d..20271dd 100644
--- a/main.c
+++ b/main.c
@@ -843,13 +843,44 @@ on_camera_switch_clicked(GtkWidget *widget, gpointer user_data)
 	start_capturing(video_fd);
 }
 
+int
+find_config(char *conffile)
+{
+	char buf[512];
+	FILE *fp;
+
+	if(access("/proc/device-tree/compatible", F_OK) != -1) {
+		fp = fopen("/proc/device-tree/compatible", "r");
+		fgets(buf, 512, fp);
+		fclose(fp);
+		sprintf(conffile, "/usr/share/megapixels/config/%s.ini", buf);
+		if(access(conffile, F_OK) != -1) {
+			printf("Found config file at %s\n", conffile);
+			return 0;
+		}
+		sprintf(conffile, "config/%s.ini", buf);
+		if(access(conffile, F_OK) != -1) {
+			printf("Found config file at %s\n", conffile);
+			return 0;
+		}
+		printf("%s not found\n", conffile);
+	} else {
+		printf("Could not read device name from device tree\n");
+	}
+	conffile = "/etc/megapixels.ini";
+	if(access(conffile, F_OK) != -1) {
+		printf("Found config file at %s\n", conffile);
+		return 0;
+	}
+	return -1;
+}
+
 int
 main(int argc, char *argv[])
 {
-	if (argc != 2) {
-		g_printerr("Usage: camera configfile\n");
-		return 1;
-	}
+	char conffile[512];
+
+	find_config(conffile);
 
 	gtk_init(&argc, &argv);
 	g_object_set(gtk_settings_get_default(), "gtk-application-prefer-dark-theme", TRUE, NULL);
@@ -886,7 +917,7 @@ main(int argc, char *argv[])
 		GTK_STYLE_PROVIDER(provider),
 		GTK_STYLE_PROVIDER_PRIORITY_USER);
 
-	int result = ini_parse(argv[1], config_ini_handler, NULL);
+	int result = ini_parse(conffile, config_ini_handler, NULL);
 	if (result == -1) {
 		g_printerr("Config file not found\n");
 		return 1;
diff --git a/uvc.ini b/uvc.ini
deleted file mode 100644
index 3ae2dea..0000000
--- a/uvc.ini
+++ /dev/null
@@ -1,7 +0,0 @@
-[device]
-rear=/dev/video0
-
-[preview]
-width=640
-height=480
-fmt=YUYV
\ No newline at end of file